[Tagging] Key "location"

Ilpo Järvinen ilpo.jarvinen at helsinki.fi
Fri Oct 14 17:38:38 BST 2011

On Fri, 14 Oct 2011, John F. Eldredge wrote:

> Pieren <pieren3 at gmail.com> wrote:
> > As an old mapper, you should also avoid the key "location" since the
> > location is stored in the nodes lat/lon coordinates...
> In the case of underground structures such as subway stations 
> (Underground stations in UK parlance), where the surface-level entrances 
> may be offset from the station proper and connected to it by tunnels, it 
> may be difficult to establish the exact longitude/latitude of the 
> station, as opposed to the longitude/latitude of its entrances.  GPS 
> units don't work while underground.

A fully-qualified mapper is then of course looking for other sources 
of information that could provide an accurate longitude/latitude relative 
to something on the ground. E.g., floor and roof tile counting, 
locating ventilation shafts, emergency exit staircases, etc. can be 
helpful :-).


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